Final answer:
The equilibrium constant (Keq) for the reaction of p-cresol with morpholine, given the acid dissociation constants of the starting and product acid, is calculated as Keq = Ka(product acid) / Ka(starting acid), resulting in an equilibrium constant of 85.09.
Step-by-step explanation:
To calculate the equilibrium constant (Keq) for the reaction of p-cresol with morpholine, when provided with the acid dissociation constants (Ka) of the starting acid and product acid, we use the relationship between the equilibrium constants of the forward and reverse reactions. The equation to find Keq is:
Keq = Ka(product acid) / Ka(starting acid)
Substituting in the values:
Keq = (4.68 x 10-9) / (5.50 x 10-11)
This calculation yields:
Keq = 85.09
Therefore, the equilibrium constant for the given acid-base reaction is 85.09.